本文叙述了直流输电线路使用瓷绝缘子存在的问题。
This paper mentions the problems on applying china insulator by the direct current transmission.
最后还分析了简化计算的方法和将它推广应用于有直流输电线路时的情况。
Finally, the method of simplifying calculations and the application of this method to power systems with HVDC are introduced.
对衡量直流输电线路电话干扰水平的等效干扰电流标准进行了系统的研究。
The equivalent disturbing current, which determines the harmonic interference noise in nearby telephone circuits, is studied systematically.
直流输电线路功率调制的目标是阻尼区域COI功角和频率间的相互振荡。
The objective of DC power modulation is to damp the relative swing of angle and frequency of the two areas from COI.
为了减小这种干扰，在直流输电线路为架空线路的时候，需要加装直流滤波器。
In order to decrease this disturbance, it is necessary to add DC filters when the DC transmission lines are built on stilt.
换流站直流侧谐波的影响主要体现为对与直流输电线路邻近的通信线路的干扰上。
The influence of the harmonics on DC side is mainly the disturbance on telecom lines.
为预测高压直流输电线路的电磁环境问题，基于上流有限元法开发了相应的分析预测软件。
To forecast the electromagnetic environment of HVDC transmission line, based on upstream finite element method (FEM) a corresponding analysis and forecasting software is developed.
直流输电线路距离往往上千公里，线路越长、发生故障的概率越高，同时查找故障点的难度也越大。
The longer the lines are, the greater probability of line fault is, and the more difficult it will be to find the fault location.
对一个仅含有直流输电线路的系统，采用复转矩系数——测试信号法，对其次同步振荡特性进行了分析。
Using the test signal method, a detailed analysis of subsynchronous oscillation for a HVDC system is performed.
在直流输电线路工程设计中，如果按我国现行标准规定的经济电流密度选择导线截面，将导致截面偏小，损耗增大。
In DC transmission line construction design, current national standard of economical current density will under predictcd conductor section, resulting in large loss.
横跨国土的高压直流输电线路与高压交流输电线路相比，在线路造价上的节省可能抵销高压直流换流终端站更高的造价。
In cross-country transmission lines, savings in the cost of HVDC lines can offset the higher cost of HVDC terminals when com-pared with HVAC transmission line.
电晕效应是特高压输电线路设计中所考虑的关键题目之一，温度、湿度对直流导线电晕影响规律是特高压直流输电线路设计的依据。
Corona effect is one of the key issues of designing UHV transmission lines, in which the influence of temperature and humidity on DC conductor corona should be considered.
800千伏特高压直流变压器是实现远距离、大容量输电的特高压输电线路的关键设备。
The 800 kV UHVDC transformer is a key component of ultrahigh-voltage power links that deliver large amounts of electricity over very long distances.
提出了架空输电线路直流融冰的两个重要参数：最小融冰电流和最大允许融冰电流的概念。
Two Critical concepts involved in direct current ice-melting technique of high voltage over head line, the least ice-melting current and the Max allowed current was presented.
因此，对盘形悬式绝缘子直流覆冰试验方法进行研究，对直流覆冰输电线路外绝缘特性的研究具有重大的意义。
Therefore, it has great significance to research DC icing test methods on disk-shaped suspension insulator for study of DC transmission line characteristics of external insulation.
应用直流潮流算法计算潮流分布，判断输电线路传输容量是否越限并进行相应处理。
Power flow distribution is calculated by DC power flow method, and then whether the transmission capacity is overload is judged and treated.
本实用新型涉及用于输电线路的融冰装置，公开了一种用于输电线路的移动式直流融冰装置。
The utility model relates to a thawing device for a transmission line, disclosing a mobile direct-current thawing device for the transmission line.
我国现有特高压直流输电工程均以输电线路等效干扰电流ieq作为直流滤波性能的衡量指标。
At present, the equivalent disturbing current Ieq of transmission line is taken as the index to judge DC filter effect for UHVDC power transmission projects in China.
我国现有特高压直流输电工程均以输电线路等效干扰电流ieq作为直流滤波性能的衡量指标。
At present, the equivalent disturbing current Ieq of transmission line is taken as the index to judge DC filter effect for UHVDC power transmission projects in China.
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